GeForce 930M vs Radeon HD 4850 512MB

Intro

Compare those specs to the Radeon HD 4850 512MB, which has clock speeds of 625 MHz on the GPU, and 993 MHz on the 512 MB of GDDR3 memory. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 4850 512MB should perform much faster than the GeForce 930M overall. (explain)

Radeon HD 4850 512MB		63552 MB/sec
GeForce 930M		14400 MB/sec
	Difference: 49152 (341%)

Texel Rate

The Radeon HD 4850 512MB is a little bit (approximately 12%) more effective at AF than the GeForce 930M. (explain)

Radeon HD 4850 512MB		25000 Mtexels/sec
GeForce 930M		22272 Mtexels/sec
	Difference: 2728 (12%)

Pixel Rate

The Radeon HD 4850 512MB will be a lot (about 35%) better at FSAA than the GeForce 930M, and also should be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 4850 512MB		10000 Mpixels/sec
GeForce 930M		7424 Mpixels/sec
	Difference: 2576 (35%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.